PhoSim v5.2 completed

The seventeenth major release of the Photon Simulator (PhoSim) is completed, tagged, and validated. We are continuing to push towards a complete ab initio Monte Carlo simulation code of the physics of astronomical observations.

Major improvements in v5.2 are: 1) a complete ab initio physics simulation of cosmic rays and terrestrial particles, 2) an improved self-consistent atmosphere scattered moonlight/sunlight & absorption calculation, 3) a variety of simplified interface changes as well as new astronomical emission & reflection models, 4) continued refinement and updates to opto-mechanical simulation capabilities including and 5) the implementation of physical large angle scattering from surfaces. Dozens of other changes and details are at:

All documentation and download information is at the usual PhoSim main site:

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Best regards,